/* style reset */

article, aside, figcaption, figure, 
footer, header, main, nav, section {
    display: block;
}


address, article, aside, blockquote, body, cite, 
div, dl, dt, dd, em, figcaption, figure, footer, 
h1, h2, h3, h4, h5, h6, header, html, img, 
li, main, nav, ol, p, section, span, ul {
    background: transparent;
    font-size: 100%;
    margin: 0;
    padding: 0;
    vertical-align: baseline;
    box-sizing: border-box;
}